Jarring mechanism for screening or separating machines.



T. J. STURTEVANT.

JARRING MECHANISM FOR SCREENING 0R SEPARATING MACHINES.

APPLlCATION FILED JAN-10.1917.

L2%9 %L PatentedJunelZ, 191?.

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invirnn air We al e ic/ STURTEVANT MILL COIv'IPANY, A CORI PURATION OE MAXNE.

JARRIN G MECHANISM FOR, SCREENING OR SEPARATING" MACHINES.

Application filed January 19, 1917.

To all whom it may concern.-

Be it known that I, THOMAS J. S'runrnvAlv'r, a citizen of the United States, residing at lVellesley, in the county of Norfolk and State of Massachusetts, have invented or discovered certain new and useful lm provements in Jarring Mechanisms for Screening or Separating Machines, of which the following is a specification, reference being had therein to the accompanying drawmg.

This invention relates to that class of inclined screening or separating machines in which the screens are percussively jarred or vibrated, and the invention relates more particularly to certain improvements in the machine of the Bell and Sturtevant Patent No. 923,108, dated May 25, 1909, in which the screens are jarred from hammers or strikers arranged below the screens. The present improvement has special reference to the hammer or vibrating mechanism for percussively jarring the fine screens of the separators.

In accordance with the present invention the fine screen is percussively jarred from below by means of hinged hammers carried by revolvin disks, said hammers striking at intervals on plates interposed between said hammers and yieldingly-mounted pins connected with elastic diaphragms which yieldingly support impact here which, in turn, yieldingly sustain the screen or screens to be jarred.

The accompanying drawing is a detail view illustrating one of the improved jarring devices, a plurality of which will of course be used in each separating machine for jarring the screen or screens.

Referring to the drawing, 12 denotes the bottom part of the separator casing to which are attached hangers 13 and 14. A revolving shaft 15, which will have its hearings in a plurality of hangers 13, is provided with disks 16 to which are hinged or pive oted hammers 17. Supported by the hanger 14 is a sprin 18 having attached to its free end a protecting impact plate 19 to he struck by the hammers l7. Resting at its lower end on the impact plate 19 is a pin 20 at tached to a sleeve 21 which is in turn eespecification of Letters Patent.

Patented no, 1911'?" Serial No, 141,589.

cured to an elastic diaphragm 2:2 mounted on the bottom casing part 122. Attached to the upper side or the said diaphragm 22 is a socket 523 loosely receiving the lower end of an impact bar 24:, the upper end of which is loosely received by a socket 25-011 which rests a transverse protection plate 26 secured to the wire mesh screen 27, so that said screen will be elastically or resiliently supported by diaphragnis It will he understood that a series of these screen-supporting and jarring mechanisms, only a single one of which is illustrated in the drawing, will he provided, is common in vibrating separators of the class to which this invention relates.

I do not herein claim hroadly the elastic diaphragms from which the screen to he jarred is yieldingly supported through the impact bars or pins, as this feature is shown in my application No. 141,182, filed January .8, 1917.

Nor do I herein claim-broadly revolving hammers, acting from helow on impact hare or pins which support the screen and which hammers are carried by rotating disks, 2m this feature is claimed in my application No. 141,588, filed simultaneously herewith.

Having thus described my invention 1 claim and desire to secure by Letters Patent:

1. In a separator, thecc-mhinaticn with a casing rovided with elastic din-- phragms, of pine connected with said diaphragnis, revolving hammers "for on said pins, springs connected with said casing part and provided with im act plates interposed between said pins and hammers, impact bars sustained lay said diaphraggms, and a screen elastically supported from said diaphragrns through said impact bars.

2. In a separatonthe combination with a casing; part provided with elastic diaphragms, or pins connected with said diaphragms, revolving hammers for acting; on said pins, rotatin disks by which said linmore are carrie and to which they are hin ed or pivoted, springs connected with sang casing part and provided with impact plates interposed between said pins and hammers, impact bars sustained by said dia- Mill screen, and through which the impact of said hammers 15 to be transmltted to sand screen and impact members interposed be- 1;

tween said devices and said hammers.

In testnnony whereof I affix my signature.

THOMAS JOSEPH STURTEVANT. 

